Process for refining hydrocarbon oils



- must necessarily be removed before the nets are marketable.

Patented 1m.- 5, 1925.

STATE-S PATENT GFFICE.

. JLGQUE G. MORBELL, OF CHIGAGO, ILLINOIS, LASBIGNOR 1'0 UNIVERSAL OILPRODUCTS OOHPANY,'OI',GEIGAGO, ILLINOIS, A. CORPORATION OF SOUTH DAKOTA.

PROCESS FOR BEFZENING- HYZDBOCABBON Oilfi- Ro Drawing.

To all whom it may concern:

7 Be it known that I, J ACQUE (3. Mosnnnn, a citizen of the UnitedStates, residing'in the city of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful Improvements in Processesfor Refining Hydrocarbon Oils, of which the following is aspecification.

This invention relates to improvements in a rocess for refininghydrocarbon oils and re ers more particularly to; the refining ofcracked distillates .such as those produced under heat and pressureconditions resulting infthe forming of aromatic distillates havingobjectionable in redients whicdh ro The use of so dium plumbite orasolution of lith'arge in caustic soda is recognized as being old in theps troleum art. In conjunction with the use of these materials sulphurhas been used as a precipitating a cut. The use of sulphur isobjectionable ecause sulphur is up re-\ ciably soluble in such oils andhas a eleterious efi'ect upon metals and particularly motor parts withwhich it comes in contact.

It has been found that-with certain types of oils and especiallythosehaving a content of sulphur compounds that an aqueous solution of sulhur dioxide or sulphur-cue acid will bring a out this precipitationwithout introducing'the deleterious effect caused bysul hur'.

s a rule, the use of caustic sodacontainting litharge dissolved thereinas desulphur- 1z1n agent has been made use of in conv nection withsulphuric acid refiningand other refinin agents. In ordinary practicethe use. of lit arge dissolved in caustic soda has followed the use ofsulphuric acid, pre- 'carbo'n oils, comprism suluectin ceded itsometimes with water washes intervening. The usual procedure is to treatthe oil with sulphuric acid, then water wash after allowing the sludgetosettle and sub- Application filed April 27,

' proposed to re the "carbon oils, comprisin se araiely and indivi uullyto t e action was. Berialin. 635,124.

For reasons mentionedpreviousl it is V use or sulplx a solution ofsulphur dioxide as a precip toting V gasoline is treated withcthelitharge .and caustic solution The presentinvention is applicable in anycase with the aforementionedbenefits.

In ver rare cases the addition of a solution of ydrogen sulphideprevious to the application of sulphur dioxidesolution will assist inbringing about precipitationof the lead sulphide and terials. Thus thereplacement by the sulphur dioxide of the sulphur serves the purpose ofrelieving thccq l of such-objectionable ingredients and preci itateswhich heretofore have been remov tion of sulphur 'and'eliminates theob'ectionahle featu'reoi havin sulphur whic is appreciably soluble intlie bining therewith I claim as myinvexitioni J 1. Steps in a processof refi ing hydrocarbon oils, comprising subjecting thevoil separatelyand indiuiduallyL-to the action of sulphuric acid and-caustic sodacontaining lithargefand subsequent to 'the sub'ection of the oil to theaction of caustic so a con-.

ur by agent. -fin some cases straight by the addif '70 I Oll fromJcomother suspemd mataining litharge, adding sulphur dioxide to assistm-the refininglreaction. I

.2. Steps in a process of refining hydrosubjectin the oil in sulphuricacid and caustic soda containing liiharge, and subsequent to thesubjection of the oil te the action of caustic soda containinglithar e,adding sulphurous acid to assist in the re ning reaction.

{3. Steps in a process ofrefining hydrothe oil separately and indiviually to t e action: of sul huric acid and caustic soda containing litarge, and subsequent to the subjection of the oil to the action ofcaustic soda JAcous o. MORRELL.

